Thread: Missing or Knocking under a load, HELP!!

Results 1 to 18 of 18

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1 Re: Missing or Knocking under a load, HELP!! 
    GT Level Member SliceTheRice's Avatar
    Join Date
    Apr 2010
    Location
    South Jordan, UT
    Posts
    336
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Great info, thanks! So my next question (again, pardon the thread jacking) is what kind of replacement schedule are you committing to with copper plugs? Yearly?

    2000 Pontiac Grand Prix GTP
    (3.4 MPS, DHP 1.0 tune, ZZP Plog & 3" DP, 2.5" cat-back exhaust, resonator delete, AL104 plugs, 180* T-stat, Falken Ziex 245/45/18 tires)
    Reply With Quote  
     

  2. #2 Re: Missing or Knocking under a load, HELP!! 
    I live here. SlowNA06's Avatar
    Join Date
    Mar 2010
    Location
    Pennsylvania
    Posts
    5,928
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I've seen anything from 10k miles to 30k miles. I would probably stick with 25-30k unless I noticed a decrease in performance (then change sooner). My guess is that these things start getting pretty worn out past 30k - they're less durable than the expensive plugs, and besides, by 30k, they'll probably start going out of gap. I mean they're fairly soft copper just hanging out in a chamber full of explosions for like two years. I wouldn't bother re-gapping when you can get a new set for $12, and you're going to have to take them out anyway.
    Reply With Quote  
     

Similar Threads

  1. gtp missing under load
    By jshuman in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 9
    Last Post: 02-20-2010, 01:12 AM
  2. Stalls under load.
    By reem82 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 0
    Last Post: 12-06-2009, 11:52 PM
  3. No power under load
    By workingpoor in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 7
    Last Post: 11-14-2009, 04:02 PM
  4. engine can't handle load...
    By gotboost3 in forum General Tech Discussion
    Replies: 10
    Last Post: 05-02-2009, 02:51 PM
  5. pinging only under load WHY ???
    By GAGT+GP-OWNER in forum General Tech Discussion
    Replies: 4
    Last Post: 11-04-2008, 01:03 AM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •